Make the specimen.
Establish the actual composition and study machining, finishing and corrosion. AETERNA 928 is a nominal target until a material lot is assayed and tested.
Awaiting physical qualification
Atelier / From design to evidence
The next work
is physical.
DEV-0.3.3 brings the digital project to one development baseline. It does not substitute for a material specimen, a measured movement or an assembled case.
Measure the donor.
Identify the actual calibre. Check its holder, stem, dial feet and hand stack before interpreting a reference envelope as a working fit.
Donor unverified
Build the interfaces.
Trial the case, lugs, crown and crystal together. Strength, sealing, assembly and serviceability have to survive the move from geometry to parts.
Assembly evidence required
Inspect the surface.
Examine edges, ribs, setting and applied lettering as physical work. The aspiration for close inspection is a test to be earned, not a performance already achieved.
No production approval
Precision is an obligation
to the next person making it.
The next conversations belong with a qualified watchmaker, case constructor, dial specialist and materials laboratory, using the same controlled development record.
Return to the design decisions